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Constraints on neutrino emission from nearby galaxies using the 2MASS redshift survey and IceCube
Journal article   Open access   Peer reviewed

Constraints on neutrino emission from nearby galaxies using the 2MASS redshift survey and IceCube

Maryon Ahrens, Christian Bohm, Kunal Deoskar, Chad Finley, Klas Hultqvist, Erin O'Sullivan, Christian Walck and IceCube Collaboration
Journal of cosmology and astroparticle physics, v 2020(7), pp 42-42
2020
url
https://doi.org/10.1088/1475-7516/2020/07/042View
Published, Version of Record (VoR)Open Access (License Unspecified) Open

Abstract

Fysik Naturvetenskap neutrino astronomy neutrino detectors neutrino experiments Natural Sciences Physical Sciences
The distribution of galaxies within the local universe is characterized by anisotropic features. Observatories searching for the production sites of astrophysical neutrinos can take advantage of these features to establish directional correlations between a neutrino dataset and overdensities in the galaxy distribution in the sky. The results of two correlation searches between a seven-year time-integrated neutrino dataset from the IceCube Neutrino Observatory, and the 2MASS Redshift Survey (2MRS) catalog are presented here. The first analysis searches for neutrinos produced via interactions between diffuse intergalactic Ultra-High Energy Cosmic Rays (UHECRs) and the matter contained within galaxies. The second analysis searches for low-luminosity sources within the local universe, which would produce subthreshold multiplets in the IceCube dataset that directionally correlate with galaxy distribution. No significant correlations were observed in either analyses. Constraints are presented on the flux of neutrinos originating within the local universe through diffuse intergalactic UHECR interactions, as well as on the density of standard candle sources of neutrinos at low luminosities.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Astronomy & Astrophysics
Physics, Particles & Fields
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